ASX vs TDY Comparison

ASE Technology Holding Co Ltd is a semiconductor assembly and testing firm. The company operates in segments: Packaging, Testing, and Electronic Manufacturing Services. Of these, Packaging segment contribute the maximum revenue. The packaging segment involves packaging bare semiconductors into completed semiconductors with improved electrical and thermal characteristics. The Testing Segment includes front-end engineering testing, wafer probing, and final testing services. In the EMS segment, the company designs manufactures, and sells electronic components and telecommunication equipment motherboards. The company is based in Taiwan but garners over half its sales from firms in the United States.

Teledyne Technologies Inc sells technologies for industrial markets. Roughly a fourth of Teledyne's revenue comes from contracts with the United States government. The firm operates in four segments: instrumentation, digital imaging, aerospace and defense electronics, and engineered systems. The instrumentation segment provides monitoring instruments primarily for marine and environmental applications. The digital imaging segment contributes majority of proportion of revenue and includes image sensors and cameras for industrial, government, and medical customers. The aerospace and defense electronics segment provides electronic components and communication products for aircraft. The engineered systems segment provides solutions for defense, space, environmental, and energy applications.